Wang Long Bay is so beautiful. It's located on Phi Phi Island. You can join a tour here. You can share a tour, or you can even go private with your partner. It looks murkier at low tide because there's no water. But at normal tide, it's beautiful 🤩. My advice is to go early so there aren't too many people and it's not too hot. It's already hot and crowded by midday.
Note: You can buy tour packages at Dalum Beach. Each package is around 2,500 baht, but if you bargain, you can get it for as low as 2,300 baht. There are 5 tourist attractions you can visit: Wang Long Bay, Pileh Lagoon, Maya Bay (if you buy an entrance ticket, you can get off at Maya Bay to take photos or play in the water, but if you don't buy an entrance ticket, you can only see Maya Bay from the longtail boat), Viking Cave, Monkey Beach, and Nui Beach.
I really like this hiding place. Often the boatman won't come, you have to ask him to stop by.